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Finding the Fourth Proportional to 40,361.68, 60,560.28 and 20,656.48

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Solution

The fourth proportional to 40,361.68, 60,560.28 and 20,656.48 is: 30,993.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,361.68 : 60,560.28 = 20,656.48 : x
  2. Step 2: Convert to fraction form
    40,361.68/60,560.28 = 20,656.48/x
  3. Step 3: Cross multiply
    40,361.68x = 60,560.28 × 20,656.48
  4. Step 4: Simplify right side
    40,361.68x = 1,250,962,212.61
  5. Step 5: Solve for x
    x = 1,250,962,212.61/40,361.68
  6. Step 6: Final answer
    x = 30,993.81

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.